| 1 |
.O File Extension |
Compiled Object Format |
| 2 |
.O01 File Extension |
Typhoon Voice |
| 3 |
.O2C File Extension |
Objects To See 3D |
| 4 |
.O2S File Extension |
Oracle To MySQL Converter Data Format |
| 5 |
.O3D File Extension |
Google Open 3D Web Graphic Format |
| 6 |
.O8D File Extension |
OCTGN Deck |
| 7 |
.O8G File Extension |
OCTGN Game Definition |
| 8 |
.O8O File Extension |
Mediator 5 Repository Tabs Vorlagen.006 |
| 9 |
.O8S File Extension |
OCTGN Set |
| 10 |
.OA File Extension |
OrCAD PCB Designer OpenAccess Database Format |
| 11 |
.OAB File Extension |
Offline Address Book |
| 12 |
.OAC File Extension |
Grand Theft Auto V Audio Data Format |
| 13 |
.OAD File Extension |
Suite Notaro Document |
| 14 |
.OAF File Extension |
Microsoft Flight Simulator Texture |
| 15 |
.OAM File Extension |
Adobe Edge Animate Widget Format |
| 16 |
.OAP File Extension |
Samsung Bada Signed Installation Package |
| 17 |
.OAR File Extension |
OpenSimulator Archive |
| 18 |
.OAS File Extension |
Microsoft Outlook Attachment Sniffer |
| 19 |
.OAT File Extension |
Google Android RunTime Code |
| 20 |
.OAV File Extension |
Microsoft Flight Simulator Texture |
| 21 |
.OAW File Extension |
OpenArchitectureWare Workflow |
| 22 |
.OAZ File Extension |
NetFax Manager OAZ Fax Image |
| 23 |
.OB File Extension |
IBM LinkWay Object |
| 24 |
.OB! File Extension |
Orbit Downloader Incomplete Download |
| 25 |
.OB3 File Extension |
ABF Software Outlook Backup Backup |
| 26 |
.OB5 File Extension |
TopLang OE Backup |
| 27 |
.OBAK File Extension |
WinSQL Offline Backup |
| 28 |
.OBB File Extension |
Android Opaque Binary Blob Format |
| 29 |
.OBD File Extension |
Office Binder Document |
| 30 |
.OBF File Extension |
OsmAnd Offline GPS Vector Maps |
| 31 |
.OBG File Extension |
ZBrush Mesh |
| 32 |
.OBI File Extension |
Outlook RSS Subscription Format |
| 33 |
.OBJ File Extension |
Wavefront 3D Object Format |
| 34 |
.OBJX File Extension |
Metatools Object Bryce Support |
| 35 |
.OBK File Extension |
OrCAD Capture Design Or Library |
| 36 |
.OBL File Extension |
TrueSpace |
| 37 |
.OBM File Extension |
EIAS Camera Motion Export Format |
| 38 |
.OBML File Extension |
Opera Mini Saved Web Page |
| 39 |
.OBML15 File Extension |
Opera Mini 5.1 Saved Web Page |
| 40 |
.OBML16 File Extension |
Opera Mini Saved Web Page Format |
| 41 |
.OBP File Extension |
Bryce Object Format |
| 42 |
.OBPACK File Extension |
ObjectBar Theme Pack |
| 43 |
.OBR File Extension |
Borland C++ Object Browser Data |
| 44 |
.OBS File Extension |
WAsP Obstacle List |
| 45 |
.OBS-SERVICE File Extension |
Open Broadcaster Software Data Format |
| 46 |
.OBSKIN File Extension |
ObjectBar Skin Format |
| 47 |
.OBT File Extension |
Openbox Theme Format |
| 48 |
.OBV File Extension |
3D Photo Browser Thumbnail Cache |
| 49 |
.OBW File Extension |
Superior Drummer Sounds Format |
| 50 |
.OBX File Extension |
Rational XDE |
| 51 |
.OBYX File Extension |
Obyx Control |
| 52 |
.OBZ File Extension |
Compressed 3D Object Format |
| 53 |
.OC3 File Extension |
OpenCanvas 3 Event Format |
| 54 |
.OC4 File Extension |
OpenCanvas 4 Event Format |
| 55 |
.OC5 File Extension |
OpenCanvas 5 Event Format |
| 56 |
.OC9 File Extension |
OrgCon Organization |
| 57 |
.OCA File Extension |
Custom Control Library Type Format |
| 58 |
.OCAMLMAKEFILE File Extension |
Caml Programming Language Makefile |
| 59 |
.OCB File Extension |
Origin Precompiled Origin C |
| 60 |
.OCC File Extension |
Oceanic DataPool Format |
| 61 |
.OCD File Extension |
OCAD Map Format |
| 62 |
.OCDC File Extension |
Mathematica Document |
| 63 |
.OCDF File Extension |
OneClickDigital Mp3 Audio Book |
| 64 |
.OCE File Extension |
Open Catalog Extension Connection Format |
| 65 |
.OCEN File Extension |
EdGCM Data |
| 66 |
.OCF File Extension |
OM2 Cipher |
| 67 |
.OCG File Extension |
Osprey Custom Graph |
| 68 |
.OCI File Extension |
OpenCanvas Image |
| 69 |
.OCL File Extension |
Object Constraint Language Data Format |
| 70 |
.OCM File Extension |
Netscape Communicator Aim |
| 71 |
.OCO File Extension |
Open Color Format Palette Format |
| 72 |
.OCP File Extension |
Advanced Art Studio Image |
| 73 |
.OCR File Extension |
FAXGrapper Fax Text Format |
| 74 |
.OCREC File Extension |
Microsoft Lync Data Format |
| 75 |
.OCSP File Extension |
HAProxy OCSP Data Format |
| 76 |
.OCT File Extension |
Radiance Octree Format |
| 77 |
.OCTEST File Extension |
Xcode Objective-C Unit Test Bundle |
| 78 |
.OCV File Extension |
OCV Training Data |
| 79 |
.OCX File Extension |
ActiveX Control |
| 80 |
.OC_ File Extension |
Compressed ActiveX Control |
| 81 |
.OD File Extension |
Mascopt Graph Request Format |
| 82 |
.OD1 File Extension |
Omnis 5 Database |
| 83 |
.OD2 File Extension |
Omnis 5 Database |
| 84 |
.OD3 File Extension |
Omnis Studio Database |
| 85 |
.OD4-9 File Extension |
Omnis5 Database |
| 86 |
.OD5 File Extension |
Omnis 5 Database Format |
| 87 |
.ODA File Extension |
CALS Group IV Type 2 Raster Image Format |
| 88 |
.ODB File Extension |
OpenDocument Database |
| 89 |
.ODC File Extension |
Office Data Connection Format |
| 90 |
.ODCCUBEFILE File Extension |
OpenDocument 1 |
| 91 |
.ODCDATABASEFILE File Extension |
Microsoft Office Data Format |
| 92 |
.ODCNEWFILE File Extension |
Microsoft Office Data Connection |
| 93 |
.ODCODC File Extension |
ODCODC Ransomware Affected Format |
| 94 |
.ODCTABLECOLLECTIONFILE File Extension |
Microsoft Office Component Format |
| 95 |
.ODCTABLEFILE File Extension |
Microsoft Office |
| 96 |
.ODE File Extension |
Microsoft Office |
| 97 |
.ODEX File Extension |
Google Android Optimized Executalbe |
| 98 |
.ODF File Extension |
OpenDocument Formula |
| 99 |
.ODG File Extension |
OpenDocument Graphic Format |
| 100 |
.ODH File Extension |
Microsoft Visual Studio Interface Definition Language |
| 101 |
.ODI File Extension |
OpenDocument Image |
| 102 |
.ODIF File Extension |
Open Document Interchange Format |
| 103 |
.ODL File Extension |
Object Description Language Format |
| 104 |
.ODM File Extension |
OverDrive Media Format |
| 105 |
.ODO File Extension |
Online Operating System Write Document |
| 106 |
.ODP File Extension |
OpenDocument Presentation |
| 107 |
.ODR File Extension |
HMI Builder Report Format |
| 108 |
.ODS File Extension |
OpenDocument Spreadsheet |
| 109 |
.ODT File Extension |
OpenDocument Text Document |
| 110 |
.ODT# File Extension |
OpenOffice.org Locked Document |
| 111 |
.ODTPC File Extension |
Oracle User Productivity Kit Presentation |
| 112 |
.ODTTF File Extension |
Microsoft Office Document Embedded Font |
| 113 |
.ODV File Extension |
Ocean Data View Data |
| 114 |
.ODVI File Extension |
LaTeX |
| 115 |
.ODX File Extension |
BizTalk Server Orchestration Format |
| 116 |
.OD_ File Extension |
Oracle Compressed Driver |
| 117 |
.OEACCAOUNT File Extension |
Windows Mail |
| 118 |
.OEACCOUNT File Extension |
Windows Mail Account Format |
| 119 |
.OEB File Extension |
Outlook Express Backup Wizard Format |
| 120 |
.OECL File Extension |
Open EDA Component Library |
| 121 |
.OEF File Extension |
Optim Export |
| 122 |
.OEM File Extension |
OEM Setup Format |
| 123 |
.OEMIGACCOUNT File Extension |
Outlook Express Temporary |
| 124 |
.OER File Extension |
AU OER TOOLS Project Format |
| 125 |
.OET File Extension |
ESignal Order Entry Ticket |
| 126 |
.OETPL File Extension |
Offline Explorer Format |
| 127 |
.OEX File Extension |
Opera Extension |
| 128 |
.OFA File Extension |
Kodak OfotoNow |
| 129 |
.OFB File Extension |
Oxygen Forensic Suite Backup |
| 130 |
.OFC File Extension |
Open Financial Connectivity Format |
| 131 |
.OFD File Extension |
ObjectView Form Definition |
| 132 |
.OFF File Extension |
Object Format |
| 133 |
.OFFICEUI File Extension |
Microsoft Office UI Customization |
| 134 |
.OFFSETS File Extension |
Offset |
| 135 |
.OFL File Extension |
Ots Format List |
| 136 |
.OFM File Extension |
Melco Embroidery Format |
| 137 |
.OFN File Extension |
MS Office Format New (Other Office Documents) |
| 138 |
.OFP File Extension |
Objecteering Project |
| 139 |
.OFR File Extension |
OptimFROG Audio Format |
| 140 |
.OFS File Extension |
OptimFROG Dualstream |
| 141 |
.OFT File Extension |
Outlook Format Template |
| 142 |
.OFX File Extension |
Open Financial Exchange Format |
| 143 |
.OGA File Extension |
Ogg Vorbis Audio Format |
| 144 |
.OGD File Extension |
Oracle Forms Graph |
| 145 |
.OGEX File Extension |
Open Game Engine Exchange Data Format |
| 146 |
.OGF File Extension |
S.T.A.L.K.E.R. Model Format |
| 147 |
.OGG File Extension |
Ogg Vorbis Audio Format |
| 148 |
.OGL File Extension |
ATI Overlay Source Code |
| 149 |
.OGM File Extension |
Ogg Media Format |
| 150 |
.OGNC File Extension |
Dynamic Web Page |
| 151 |
.OGO File Extension |
Origin Graphic Object |
| 152 |
.OGR File Extension |
OGR C++ Open Source Library |
| 153 |
.OGRE File Extension |
OGRE 3D Data Format |
| 154 |
.OGS File Extension |
Origons Movie Data Format |
| 155 |
.OGV File Extension |
Ogg Video Format |
| 156 |
.OGW File Extension |
OriginLab Worksheet |
| 157 |
.OGX File Extension |
Ogg Vorbis Multiplexed Media Format |
| 158 |
.OGZ File Extension |
Cube 2 Map Format |
| 159 |
.OH File Extension |
DrillAssistant List |
| 160 |
.OH4 File Extension |
Overhoor List |
| 161 |
.OHP File Extension |
MS-DOS 7 |
| 162 |
.OHS File Extension |
Bink Outbound History |
| 163 |
.OHT File Extension |
Oracle Help For Java Links Data Format |
| 164 |
.OHW File Extension |
Overhoor DrillAssistant List |
| 165 |
.OIF File Extension |
QuickBase Web-sharable Database Interchange |
| 166 |
.OIL File Extension |
Open Image Library Format Image Format |
| 167 |
.OIV File Extension |
OpenIV Mod Archive Format |
| 168 |
.OJP File Extension |
3WayPack |
| 169 |
.OK File Extension |
Qedit |
| 170 |
.OKD File Extension |
Lenovo OneKey Recovery Data Format |
| 171 |
.OKM File Extension |
OkMap Map Defining |
| 172 |
.OKOZO File Extension |
Okozo Desktop Animation |
| 173 |
.OKR File Extension |
PowerRecover One Key Recovery |
| 174 |
.OKS File Extension |
OKScript |
| 175 |
.OKT File Extension |
Oktalyzer Module |
| 176 |
.OKX File Extension |
OKScript |
| 177 |
.OL File Extension |
Valve Hammer Object Layout |
| 178 |
.OLA File Extension |
Online Access Format |
| 179 |
.OLB File Extension |
OLE Object Library |
| 180 |
.OLB2 File Extension |
CanOpener Library |
| 181 |
.OLD File Extension |
Backup Format |
| 182 |
.OLE File Extension |
Microsoft Object Linking And Embedding |
| 183 |
.OLE2 File Extension |
Microsoft Office Binary Document Container Format |
| 184 |
.OLF File Extension |
OyezForms Legal Documents |
| 185 |
.OLG File Extension |
Orbit Legend Data Format |
| 186 |
.OLK File Extension |
Outlook Address Book Format |
| 187 |
.OLK14 File Extension |
Microsoft Outlook For Mac Message Format |
| 188 |
.OLK14ARRANGE File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 189 |
.OLK14CALATTACH File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 190 |
.OLK14CATEGORY File Extension |
Outlook Category Format |
| 191 |
.OLK14CONTACT File Extension |
Outlook Contact Format |
| 192 |
.OLK14DBHEADER File Extension |
Microsoft Outlook 2011 For Mac Database |
| 193 |
.OLK14EVENT File Extension |
Outlook Calendar Event Format |
| 194 |
.OLK14EXACCOUNT File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 195 |
.OLK14EXMOVES File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 196 |
.OLK14EXSYNCMAP File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 197 |
.OLK14FOLDER File Extension |
Microsoft Outlook 2011 For Mac Folder |
| 198 |
.OLK14GROUP File Extension |
Outlook Group Format |
| 199 |
.OLK14IMAPSYNCMAP File Extension |
Microsoft Outlook 2011 For Mac Data Format |
| 200 |
.OLK14MAILACCOUNT File Extension |
Outlook Mail Account Format |
| 201 |
.OLK14MESSAGE File Extension |
Outlook Message Format |
| 202 |
.OLK14MSGATTACH File Extension |
Microsoft Outlook 2011 For Mac Message Attachment |
| 203 |
.OLK14MSGSOURCE File Extension |
Outlook Email Message Data Format |
| 204 |
.OLK14NOTE File Extension |
Outlook Note Format |
| 205 |
.OLK14PREF File Extension |
Outlook Preferences Format |
| 206 |
.OLK14RECENT File Extension |
Microsoft Outlook 2011 For Mac Recent Address |
| 207 |
.OLK14RULE File Extension |
Microsoft Outlook 2011 For Mac Rule |
| 208 |
.OLK14SCHEDULE File Extension |
Microsoft Outlook 2011 For Mac Schedule |
| 209 |
.OLK14SEARCH File Extension |
Microsoft Outlook 2011 For Mac Saved Search |
| 210 |
.OLK14SIGNATURE File Extension |
Outlook Signature Format |
| 211 |
.OLK14TASK File Extension |
Outlook Task Format |
| 212 |
.OLK14UID File Extension |
Microsoft Outlook 2011 For Mac UID |
| 213 |
.OLK15MESSAGE File Extension |
Microsoft Outlook For Mac Message Format |
| 214 |
.OLL File Extension |
TrialDirector Load |
| 215 |
.OLM File Extension |
Mac Outlook Database Format |
| 216 |
.OLN File Extension |
Microsoft Visual C++ Outline Examples |
| 217 |
.OLPROJ File Extension |
Adobe OnLocation |
| 218 |
.OLR File Extension |
Openlab RAW Image Format |
| 219 |
.OLS File Extension |
Microsoft Office List Shortcut |
| 220 |
.OLT File Extension |
Orbit Downloads List |
| 221 |
.OLV File Extension |
Roller Coaster Tycoon |
| 222 |
.OLY File Extension |
AFP Advanced Function Presentation Overlay Resource |
| 223 |
.OMA File Extension |
Sony OpenMG Music Format |
| 224 |
.OMC File Extension |
Origin Customized Menu |
| 225 |
.OMCS File Extension |
Office Manager Access Format |
| 226 |
.OMD File Extension |
MapInfo Routing J Server Data |
| 227 |
.OME File Extension |
Open Microscopy Environment OME Image Format |
| 228 |
.OMEG File Extension |
Mathematica For Mac |
| 229 |
.OMF File Extension |
Open Media Framework Format |
| 230 |
.OMFI File Extension |
Open Media Framework |
| 231 |
.OMG File Extension |
O&O DiskImage Backup Format |
| 232 |
.OMI File Extension |
Orbit Multiresolution Image Format |
| 233 |
.OMK File Extension |
Ocera Make System Script Format |
| 234 |
.OML File Extension |
TracePro Model |
| 235 |
.OMLOG File Extension |
CA OM Web Viewer Log Format |
| 236 |
.OMN File Extension |
Omnipotent Collection |
| 237 |
.OMO File Extension |
OMake Object Format |
| 238 |
.OMOD File Extension |
Oblivion Mod Archive |
| 239 |
.OMP File Extension |
Office Manager Document Archive |
| 240 |
.OMR File Extension |
OMR Template |
| 241 |
.OMS File Extension |
Order Maven |
| 242 |
.OMT File Extension |
SITH HLA Object Model Template |
| 243 |
.OMU File Extension |
XWE Data Format |
| 244 |
.OMX File Extension |
OtsAV Media Library Information Format |
| 245 |
.ON2 File Extension |
On2 Encoded FLV |
| 246 |
.ONB File Extension |
OpenModelica Document Format |
| 247 |
.ONBATCH File Extension |
ON1 Photo Data Format |
| 248 |
.OND File Extension |
Lotus Notes Encapsulated Memo Format |
| 249 |
.ONE File Extension |
OneNote Document |
| 250 |
.ONEBIN File Extension |
OneNote Data Format |
| 251 |
.ONECACHE File Extension |
Microsoft OneNote Cache |
| 252 |
.ONEFFECTS File Extension |
Perfect Effects Data Format |
| 253 |
.ONENHANCE File Extension |
Perfect Effects Data Format |
| 254 |
.ONEPASSWORD-LICENSE File Extension |
1Password License Format |
| 255 |
.ONEPKG File Extension |
Microsoft OneNote Package Format |
| 256 |
.ONEPKG_1033 File Extension |
Microsoft Update Data Format |
| 257 |
.ONETMP File Extension |
Microsoft OneNote Temporary |
| 258 |
.ONETOC File Extension |
Microsoft OneNote Table Of Contents |
| 259 |
.ONETOC2 File Extension |
Microsoft OneNote Table Of Contents Format |
| 260 |
.ONEXPORT File Extension |
ON1 Photo Data Format |
| 261 |
.ONM File Extension |
Outdoor Navigator Map |
| 262 |
.ONPORTRAIT File Extension |
ON1 Photo Data Format |
| 263 |
.ONPORTRAITFD File Extension |
Perfect Effects Data Format |
| 264 |
.ONPRESET File Extension |
Perfect Effects Preset Format |
| 265 |
.ONRESIZE File Extension |
Perfect Effects Data Format |
| 266 |
.ONT File Extension |
TheWord Bible Text Module |
| 267 |
.ONTX File Extension |
TheWord Encrypted Bible Text Module |
| 268 |
.ONW File Extension |
Omron HMI NTST |
| 269 |
.ONX File Extension |
OnyxGrass Image |
| 270 |
.OO3 File Extension |
OmniOutliner 3 Format |
| 271 |
.OOA File Extension |
OOA Interchange Format Data Format |
| 272 |
.OOC File Extension |
CHARTrunner Definition Data Format |
| 273 |
.OODAGTDAT File Extension |
O&O Defrag Binary Report Format |
| 274 |
.OODAGTID File Extension |
O&O Defrag Binary Report Format |
| 275 |
.OODAGTRPD File Extension |
O&O Defrag Binary Report Format |
| 276 |
.OODBRI File Extension |
O&O Defrag Binary Report Format |
| 277 |
.OODBRP File Extension |
O&O Defrag GUI Settings Format |
| 278 |
.OODGUISETTINGS File Extension |
O&O Defrag GUI Settings Format |
| 279 |
.OOG File Extension |
PyGraph Python Graphics Interface Object Oriented Graphics |
| 280 |
.OOGL File Extension |
Geomview Object Oriented Graphics Library |
| 281 |
.OOK File Extension |
Arachne Batch Script |
| 282 |
.OOL File Extension |
Orbit Object List Format |
| 283 |
.OOPS File Extension |
Oops Format |
| 284 |
.OOS File Extension |
OpenOffice.org Spreadsheet |
| 285 |
.OOT File Extension |
OpenOffice.org Text |
| 286 |
.OP File Extension |
ESignal OptionsPlus |
| 287 |
.OP2 File Extension |
Outpost 2 Saved Game |
| 288 |
.OP4 File Extension |
Nastran Output |
| 289 |
.OPA File Extension |
Fly! RAW Image Opacity Map |
| 290 |
.OPAL File Extension |
Microsoft Office Customization Tool (OCT) Language-specific Settings |
| 291 |
.OPAX File Extension |
Microsoft Office Customization Tool (OCT) Standard Settings |
| 292 |
.OPB File Extension |
Bryce Object |
| 293 |
.OPC File Extension |
Microsoft Office 97 Upgrade Control |
| 294 |
.OPCSES File Extension |
Opticodec-PC Data Format |
| 295 |
.OPD File Extension |
Durango Interferometry Software Document Format |
| 296 |
.OPDOWNLOAD File Extension |
Opera Partially Downloaded Format |
| 297 |
.OPEF File Extension |
OmniPass Encrypted Folder |
| 298 |
.OPENBSD File Extension |
OpenBSD Readme Format |
| 299 |
.OPF File Extension |
Open Packaging Format |
| 300 |
.OPG File Extension |
Offline Plan Generation Package |
| 301 |
.OPI File Extension |
Adlib OCR Processing Information |
| 302 |
.OPJ File Extension |
OrCAD Project Format |
| 303 |
.OPK File Extension |
Sinking Island/LIle Noyée Game |
| 304 |
.OPLC File Extension |
Nokia Operator Logo Format |
| 305 |
.OPLM File Extension |
Outline Processor Markup Language |
| 306 |
.OPLX File Extension |
Omniplan Project Document Format |
| 307 |
.OPML File Extension |
Outline Processor Markup Language Format |
| 308 |
.OPN File Extension |
Court Opinion |
| 309 |
.OPP File Extension |
IPhotoDVD |
| 310 |
.OPPC File Extension |
Space Marine Game Resource Package |
| 311 |
.OPPO File Extension |
Oppo Core Data Format |
| 312 |
.OPQ File Extension |
Eschalon: Book I Game |
| 313 |
.OPR File Extension |
OPRO X Browser |
| 314 |
.OPRC File Extension |
Palm OS Data Format |
| 315 |
.OPS File Extension |
Office Profile Settings Format |
| 316 |
.OPSX File Extension |
Open Pedigree Standard Exchange Document Format |
| 317 |
.OPT File Extension |
MySQL Database Data Format |
| 318 |
.OPTIONS File Extension |
SE-SOFT Configuration Format |
| 319 |
.OPTS File Extension |
Linux Configuration Options Format |
| 320 |
.OPUS File Extension |
Opus Audio Format |
| 321 |
.OPUSCERT File Extension |
Directory Opus Certificate Format |
| 322 |
.OPW File Extension |
OrgPlus For Windows Organization Chart |
| 323 |
.OPX File Extension |
OrgPlus Org Chart |
| 324 |
.OPXT File Extension |
OrpPlus Template |
| 325 |
.OPY File Extension |
OptiY Model |
| 326 |
.OP_ File Extension |
GKSetup Support |
| 327 |
.OQY File Extension |
Excel OLAP Query Format |
| 328 |
.OR2 File Extension |
Lotus Organizer 2 Format |
| 329 |
.OR3 File Extension |
IBM Lotus Organizer 97 Format |
| 330 |
.OR4 File Extension |
IBM Lotus Organizer 97 GS Format |
| 331 |
.OR5 File Extension |
Lotus Organizer 5 Format |
| 332 |
.OR6 File Extension |
Lotus Organizer 6 Format |
| 333 |
.OR8 File Extension |
Rational Rose Oracle8 Database Model Report |
| 334 |
.ORA File Extension |
Oracle Database Configuration Format |
| 335 |
.ORB File Extension |
Original EBook Reader Ebook |
| 336 |
.ORC File Extension |
CSound Orchestra Midi Format |
| 337 |
.ORD File Extension |
OMAX Routed Data Format |
| 338 |
.ORDEREDTEST File Extension |
Visual Studio Ordered Test Format |
| 339 |
.ORE File Extension |
Ore Executable Format |
| 340 |
.ORF File Extension |
Olympus RAW Format |
| 341 |
.ORG File Extension |
Lotus Organizer Format |
| 342 |
.ORG2+ File Extension |
Lotus Organizer |
| 343 |
.ORI File Extension |
Original Format |
| 344 |
.ORIG File Extension |
Original Format |
| 345 |
.ORIGINAL File Extension |
Netobjects Fusion Components Bbscomp Message |
| 346 |
.ORIGINAL_EPUB File Extension |
EPUB Ebook Backup |
| 347 |
.ORIGINAL_MOBI File Extension |
MOBI Ebook Backup |
| 348 |
.ORK File Extension |
Warhammer Mark Of Chaos Game Archive |
| 349 |
.ORL File Extension |
Object-Relational Language |
| 350 |
.ORMDESIGNER File Extension |
ORM Designer Project |
| 351 |
.ORP File Extension |
WinSLAM Data Format |
| 352 |
.ORS File Extension |
DSP Group TrueSpeech Audio Format |
| 353 |
.ORT File Extension |
COREX Orthographic Transcriptions Format |
| 354 |
.ORV File Extension |
Oracom Video Format |
| 355 |
.ORX File Extension |
RadiantOne VDS Database Schema |
| 356 |
.ORY File Extension |
Sage ACT! Data Format |
| 357 |
.ORZ File Extension |
Holic Game |
| 358 |
.OS File Extension |
ObjectScript Source Format |
| 359 |
.OS2 File Extension |
Os2 System |
| 360 |
.OS3 File Extension |
OS/2 Warp 3 |
| 361 |
.OSA File Extension |
W32/Sober-AD |
| 362 |
.OSAS File Extension |
Apple Script Library Tani Script |
| 363 |
.OSAX File Extension |
FindFile OSAX Mac Format Type |
| 364 |
.OSB File Extension |
OpenStreetMap Binary Map Format |
| 365 |
.OSBX File Extension |
OneSafe Exported Backup |
| 366 |
.OSC File Extension |
Remote Installation Services Client Installation Wizard Format |
| 367 |
.OSCD File Extension |
TouchOSC Interface Editor Template |
| 368 |
.OSD File Extension |
Open Software Description |
| 369 |
.OSDX File Extension |
Search Connector Description Format |
| 370 |
.OSF File Extension |
Descent 3 Sound |
| 371 |
.OSG File Extension |
OSGJS JSON Input |
| 372 |
.OSGB File Extension |
OpenSceneGraph Binary Scene Data Format |
| 373 |
.OSGT File Extension |
OpenSceneGraph ASCII Scene Data Format |
| 374 |
.OSH File Extension |
IBM InfoSphere Schema Format |
| 375 |
.OSINSTALLMESSAGES File Extension |
MacOS System Data Format |
| 376 |
.OSK File Extension |
Osu! Skin Format |
| 377 |
.OSL File Extension |
OckamSoft Log |
| 378 |
.OSM File Extension |
OpenStreetMap Map Format |
| 379 |
.OSN File Extension |
Open Symbolic Notation Data Format |
| 380 |
.OSP File Extension |
OpenShot Project Format |
| 381 |
.OSPX File Extension |
Dell KACE Patch Definition Format |
| 382 |
.OSR File Extension |
Osu! Replay Format |
| 383 |
.OSS File Extension |
Microsoft Outlook Saved Search Format |
| 384 |
.OST File Extension |
Outlook Offline Folder Format |
| 385 |
.OSU File Extension |
Osu! Script |
| 386 |
.OSW File Extension |
ONESWING Contents |
| 387 |
.OSX File Extension |
PowerPC Executable Format |
| 388 |
.OSZ File Extension |
Osu! Beatmap Format |
| 389 |
.OT File Extension |
TheWord Old Testament Text Module |
| 390 |
.OTA File Extension |
OTA Bitmap Image |
| 391 |
.OTB File Extension |
Nokia Over The Air Bitmap Image |
| 392 |
.OTC File Extension |
OpenDocument Chart Template |
| 393 |
.OTD File Extension |
OpenIV Texture Data |
| 394 |
.OTF File Extension |
OpenType Font |
| 395 |
.OTG File Extension |
OpenDocument Graphic Template |
| 396 |
.OTH File Extension |
OpenDocument HTML Template |
| 397 |
.OTI File Extension |
OpenDocument Image Template |
| 398 |
.OTL File Extension |
NoteTab Outline Format |
| 399 |
.OTLN File Extension |
Opal Outline Format |
| 400 |
.OTM File Extension |
Outlook Macro Format |
| 401 |
.OTN File Extension |
OmniPage Pro Training Data Format |
| 402 |
.OTO File Extension |
AutoPano Project Format |
| 403 |
.OTP File Extension |
OpenDocument Presentation Template |
| 404 |
.OTR File Extension |
IRIX Complied FTR |
| 405 |
.OTRKEY File Extension |
OnlineTvRecorder Encoded Video Format |
| 406 |
.OTS File Extension |
OpenDocument Spreadsheet Template |
| 407 |
.OTT File Extension |
OpenDocument Document Template |
| 408 |
.OTV File Extension |
Rotor-Disc OTV Kit OTV Calibration |
| 409 |
.OTVDATAFILE File Extension |
OnlineTV Data Format |
| 410 |
.OTW File Extension |
Origin Worksheet Template Format |
| 411 |
.OTX File Extension |
TheWord Encrypted Old Testament Text Module |
| 412 |
.OTZ File Extension |
OpenLP Theme Format |
| 413 |
.OUT File Extension |
Output Format |
| 414 |
.OUT1 File Extension |
UltraEdit Data Format |
| 415 |
.OUTJOB File Extension |
Altium Designer Data Format |
| 416 |
.OUTLINE File Extension |
FontTwister Letter Outline |
| 417 |
.OUTLOOK97 File Extension |
Microsoft Outlook Custom Mail |
| 418 |
.OUV File Extension |
Sphinx Open Ended Responses Format |
| 419 |
.OUX File Extension |
Bibexcel |
| 420 |
.OV File Extension |
OpenInsight Database Overflow |
| 421 |
.OV1 File Extension |
Overlay |
| 422 |
.OV2 File Extension |
TomTom Points Of Interest Database |
| 423 |
.OV3 File Extension |
Overlay |
| 424 |
.OV4 File Extension |
Overlay |
| 425 |
.OV5 File Extension |
Overlay |
| 426 |
.OVA File Extension |
Open Virtual Appliance |
| 427 |
.OVD File Extension |
ObjectVision Data |
| 428 |
.OVE File Extension |
Overture Musical Score |
| 429 |
.OVF File Extension |
Open Virtualization Format |
| 430 |
.OVG File Extension |
ObjectVision Converted Graphic |
| 431 |
.OVH File Extension |
OMSI Bus Settings |
| 432 |
.OVISUITE File Extension |
Nokia Ovi Suite Data Format |
| 433 |
.OVK File Extension |
Little Busters! Game Data Format |
| 434 |
.OVL File Extension |
Rollercoaster Tycoon 3 Data Format |
| 435 |
.OVLX File Extension |
E-Sword Overlay Data Format |
| 436 |
.OVOLOG File Extension |
OoVoo Log |
| 437 |
.OVP File Extension |
The Overlay Maker Package Format |
| 438 |
.OVPN File Extension |
OpenVPN Configuration Format |
| 439 |
.OVR File Extension |
The Overlay Maker Overlay Format |
| 440 |
.OVS File Extension |
Ovation 1 Style Sheet |
| 441 |
.OVT File Extension |
Orbit Vector Tiled Format |
| 442 |
.OVW File Extension |
Logic Pro Overview Format |
| 443 |
.OW File Extension |
Free Pascal 1.0.x Object Format |
| 444 |
.OWC File Extension |
OutWit Catch Database |
| 445 |
.OWFS File Extension |
Web Feature Service Data Format |
| 446 |
.OWG File Extension |
OutWit Gear Database |
| 447 |
.OWL File Extension |
OWL Source Code Format |
| 448 |
.OWM File Extension |
OutWit XML Mashup Format |
| 449 |
.OWR File Extension |
PeopleSoft Results Archive |
| 450 |
.OWS File Extension |
Web Studio Project |
| 451 |
.OWT File Extension |
Ancestry.com OneWorldTree |
| 452 |
.OWX File Extension |
OutWit Hub Script Format |
| 453 |
.OX File Extension |
Ox Object-Oriented Matrix Programming Language |
| 454 |
.OXD File Extension |
PS3 Proxy Server |
| 455 |
.OXF File Extension |
IBM Rational Rhapsody |
| 456 |
.OXO File Extension |
Ox Object-Oriented Matrix Programming Language |
| 457 |
.OXPS File Extension |
OpenXPS Format |
| 458 |
.OXS File Extension |
Racer Onyx Script Format |
| 459 |
.OXT File Extension |
Apache OpenOffice Extension |
| 460 |
.OXYGENE File Extension |
Oxygene Project Format |
| 461 |
.OYX File Extension |
Approach Alternate Database Index |
| 462 |
.OYZ File Extension |
Lotus Approach Alternate DBASE Index |
| 463 |
.OZ File Extension |
Opera Job Management Compressed Format |
| 464 |
.OZD File Extension |
Win32.TrojanDownloader.Agent.OZD Trojan Format |
| 465 |
.OZF2 File Extension |
OziExplorer Map |
| 466 |
.OZFX3 File Extension |
OziExplorer Image |
| 467 |
.OZJ File Extension |
Mu Online Graphic |
| 468 |
.OZP File Extension |
Orgadata LogiKal |
| 469 |
.OZT File Extension |
Mu Online Texture |